This is dated 1999, but feels like a decent level from 1994 or 1995. Although it's for Doom II there are no Doom II features at all; you fight zombies, sergeants, and imps with the single shotgun in a small techbase. It's not bad, although it takes very little time to finish, because there are really only three rooms, with a couple of corridors to link them up. Feels like an early part of a quickie megawad.